Battery Terminal Clamps: Heavy-duty battery terminal clamps are screwed on to provide a tight and secure connection for increased strength and reduced corrosion. Battery Clamp: 3-way battery clamp connector with positive and negative cables. Each battery terminal splits the connector into three outputs: two M6 screws and one M8 screw for easy wiring. Super Durable: Made of tin-plated brass with a rubber protective cover, good conductivity, low resistance, corrosion resistance, and long service life. Easy to Install: + and - are marked directly on the connector, suitable for battery terminals with a negative pole diameter of Ø17 mm and a positive pole diameter of Ø19.0 mm. They install directly without modification, making assembly faster and easier to install. Wide range of uses: Battery terminal connector for boats, cars, RVs, campers and vans, suitable for most types of 6V/12V/24V batteries. The fixing clamp requires the buyer to assemble it by themselves.